Several options are available - depending on the "editing" features desired. You can get simple editing using a HTML page with a form containing a text box - this would allow your copy/paste and simple insert.

You can embed a link to a ms WORD DOC file, and invoke WORD via the browser, if the user has it installed.

You can even make this question have some connection to perl, by serving such a HTML document via a perl program using something like HTTP::Daemon.